Aaron A. Maple (1866-1938) was an asbestos building supplies traveling salesman for the Ohio branch of the Asbestos Shingle, Slate & Sheathing Co. This small collection contains fourteen of Maple's personal diaries from 1920 to 1936 (with some gaps) that document his home life, expenses, work, and travel throughout the northern and northwestern parts of the state.

The American Insulation Company was a manufacturer of asbestos tape, tubing, gloves, and other asbestos products. The company was founded in 1914 by John W. Latchum (1884-1953) in Philadelphia, Pennsylvania. Beginning in the 1920s, it began manufacturing its patented and trademarked product, "Eternit" Asbestos Shingles. This album of photographs consists of exterior views of buildings, mostly residential homes, showcasing the new roofs. The captions of each image list the city, state, name of the head of residence or builder, color/type of shingle method used, and a brief sentence about the choice of roof color for the type of house. The estimated date range of the images is from the 1940s; however, it is possible that some date to a bit earlier or later.